Excerpt: As the Canon 11-24 lens is too expensive to me, so, I choose this one as my wide angle lens. Now, I got 11-24 wide angle zoom lens, 24-70 standard zoom lens and a 70-200 telephoto zoom lens. The best part of this lens is the price, it is relatively cheap among the wide zoom lens.
Excerpt: Used this sigma 12-24 lens with my 5D mark3 without any problem, quality came out great. I used this for my landscape or interior application photos and I knew it's an f4.5 lens so using a tripod is necessary at low light space. Compare with canon 11-24 f4, this is much cheaper.
Summary: This lens is very nicely made and works perfectly. These bulbous lenses attract dust like crazy so when you use them bring a cloth or puffer to clean the lens periodically. 12mm might be a little wide for many of you as the distortion along the outter width is dramatic but that also lends itself in...
Excerpt: I have two of these 12-24 lenases; a 2004 version for Nikon and 2012 version for Canon. The earlier 12-24 was soft at the edges at wide apertures; but good at F8. Both are very good for archichitecture; interiors and landscapes The later 2011 version is significantly better wide open; but does...
Summary: High quality lens that allows me to take exceptional pictures. Is very useful for real estate professionals who need pictures of homes to be put on the market. Learning how to use the lens was simple and straight forward. This lens exceeded my expectations.
Summary: I use and own the previous version (EX) version of this lens, and in expanding my capabilities to add an additional camera kit, decided to invest in another one. I believe they have actually improved this product in small but important ways.
Excerpt: I use wide angle for architectural images and this lens is so great for my work. Almost no edge distortion when level, super wide angle and such a compact lens. I will be using this lens often.
Pros: Consistent Output, Fast / accurate auto-focus, Small size